Bilge-block for dry-docks.



PATENTED DEG.' 26, 1905. J. L. GRANDALL.

BILGB BLOCK POR DRY DOGKS.

APPLICATION FILED 00T.18, 1906.

4 SHEETS-SHEET l.

No. 808,072. PATENTED DBU. 26, 1905. J. L. CRANDALL.

BILGB BLOCK POR DRY DOCKS.

PYLIOATION FILED 00T.16. 1905.

4 SHEETS-SHEET 2.

m2126656@ ZZWZZW.' fvg/@M @jf M7 *mid 7 No. 808,072. PATENTE!) DEG. 26, 1905.

. J. L. CRANDALL.

. BILGE BLOCK FOR DRY DOGKS.

APPLICATION FILED 0013.16. 1905.

4 SHEETS-SHEET 3.

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No. 808,072. PATENTED DBO. 26, 1905.

J. L. CRANDALL.

BILGE CK FOR DRY DOCKS.

ILBD 001216, 1905.

APPL ON I' 4 SHEETS-SHEET 4.

NITED STATES PATENT cierren. i

JAMES L. CRANDALL, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO H. I. CRANDALL & SON CO., OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

- BlLGE-BLOCK FOR DRY-DOCKS.

Specification of Letters Patent.

Patented Dee. 26, 1905.

To LZ w/wm t may concern:

Be it known that I, JAMES L. CRANDALL, of Malden, county of Middlesex, State of Massachusetts, have invented an Improvement in Bilge-Blocks for Dry-Docks, of which the following description, in connection with the accompanying drawings, isV a specification, like characters on the drawings representing like parts.

This invention relates to bilge-blocks for dry-docks, and has for its object to improve the construction of the same to the end that a very substantial block may be produced, capable of resisting or supporting a heavy weight, which may be operated Veasily even when the weight is upon it.

The invention consists, essentially, in a base-block and a bilge-engaging block pivoted thereon,l combined with a prop which engages the outer end of the bilge-engaging block and which when the bilge-engaging block is in its uppermost or normal position occupies a perpendicular position, but which is adapted to be moved downward and into an inclined position to drop the outer end of the bilge-engaging block, and means for moving said prop.

The invention also consists in the means for supporting the prop independent of the means employed for moving it, whereby it is adapted to sustain a heavy weight, yet may be easily moved, and also in other featuresto be hereinafter described.

Figure l shows in side elevation a bilgeblock for dry-docks embodying this invention, the bilge-engaging block being lifted into its normal position to engage the bilge ofthe vessel. Fig. 2 is a left-hand end elevation of the bilge-block shown in Fig. 1. Fig. 3 is a vertical section of the bilge-block shown in Fig. 2, taken on the dotted line 3 3. Fig. 4 is a detail showing the pivot for the bilge-engaging block. Fig. 5 is a front elevation of the roller-support and actuator for the prop. Fig. 6 is a side elevation and partial section of the bilge-block, showing the bilge-engaging block in its lowermost position. Fig. 7

is a vertical section of the operating mechanism for the bilge-block, taken on the dotted line 7 7. Fig. S is an enlarged sectional detail of the roller-support and actuator for the p aiiepresents the base-block, and b the bilgeengaging block, which is mounted upon and pivoted to the base block a. These two blocks will be made of any usual or suitable shape and size. As a pivot for the bilge-engaging block I have provided two plates a b', (see Figs. 1 and 4,) which are secured, respectively, to the adjacent sides of the blocks a and b, and one of said plates, as a, is provided or formed with a single geartooth or projection a2 and the other plate, as b, with a tooth-receiving recess b2, adapted to receive said tooth a2, and the plate b is adapted to rock on the plate a. The weight upon the block b will be in part resisted by this pivotal connection, and as the construction of this pivotal connection is very strong and durable it is especially adapted for resisting a heavy weight.

The means for moving the bilge-engaging block b is located at the outer end thereof opposite its pivotal connection and is interposed between the blocks a and b.

c represents a plate which is secured to the under side of the bilge-engaging block b, having a centrally-disposed transversely-extended semicircular boss c', which is formed with a tooth-receiving groove or recess c2 at a point intermediate its length, said groove extending for a portion only of the length of the boss, so that beyond each end of said groove, as well as at each side thereof, a curved or semicircular bearing is formed. A prop d is located beneath the plate c, which is made as a plate of considerable width and thickness for strength. The upper end of said prop is formed with a tooth or projection d at a point intermediate its width, which is adapted to enter and work in the groove or recess c2, and is also formed with a circular bearing di at each side of said tooth, which engage the circular bearings formed on the boss c. The intermediate tooth d does not bottom in the recess provided for it. Hence the two circular bearings will engage each other. The

outer end of the bilge-engaging blocktherefore rests upon the circular bearings provided on the upper end of the prop, and the tooth on the prop merely serves to hold the prop in position. The lower end of said rop is formed or rovided at a oint interme iate its width wit several teet being arranged, as herein shown, as a sector d2, which is eX- tended to one side of the plate and includes the end portion thereof, Vbeing what might be ktermed the lower right-hand quarter-section of a toothed gear. The lower end of said prop at each side of said toothed sector d2 is formed or provided with circularlyformed bearings d20, which extend to the sides of the prop or thereabout. The circularly-forrned bearings at the lower end of the prop d rest upon a roller e. Along the intermediate portion of the roller e teeth e are provided, leaving the cylindrical end portions thereof at each side of said teeth as a roller-support for the prop. The teeth of the sector (Z2 are engaged by the teeth e of the roller, so that as the roller is revolved the prop will be moved into and out of an inclined position. The toothed roller thus serves as and constitutes the actuating member for the rop; but neither the teeth of the roller nor t e teeth of the sector bottom in the tooth-receiving spaces. Hence said roller serves as a roller-support for the prop. The roller e, which thus serves as a roller-support and also as the actuating member of the prop, rests upon a stationarily-supported baseplate f which is secured to the upper side of the base-block a, said plate having circularly-formed bearings f 10 at each side of an intermediate toothed portion or sector f, the circularly-formed bearings thereof supporting the roller, and hence serving as a support for the actuating member, and the toothed portion or sector f referred to being what might be called the "upper left-hand quarter-section of a toothed gear and engaging the teeth e of the roller f?. The support thus provided for the actuating member is inclined, and as the actuating member is turned on its axis it is caused to travel along on the toothed portion or sector f, thereby gradually rising or falling, according to the direction in which it is moved.

The upper end of the prop d is loosely connected with the plate on the bilge-engaging block, and the lower end of said prop is loosely connected with the rolling actuating member, and said rolling actuating member isV loosely connected with the stationary support or base-plate f', and to provide these loose connections the plate c has projecting from it in opposite ways from its opposite ends, at points coincident with the axis of the circularly-formed bearing portions thereof, journals c3, and the upper end of the prop likewise has projecting from it in opposite ways Jfrom its opposite sides, at points coincident with the axis of the circularly-formed bearings thereon, similarly-formed journals d3, and links d4, each formed with two circular journal-receiving holes through it, are placed on the journals c3 d3 at the opposite sides of the plate and prop, said links being held thereon by cotter-pins or otherwise. The lower end of the prop likewise has projecting from it in opposite ways, at a point coincident with the axis of the circularlysides, journals d5, and the rolling actuating member c has its journals e2 extended therefrom at each end, and links d, each formed with two circular journalreceiving holes through it, are placed on said journals d5 e2 at the opposite sides of the prop and roller. The stationary support f has extended from it in opposite ways from its opposite ends, at points coincident with the axis of the circularly-forined bearings, journals f2, and links f3, each formed with two circular journalreceiving holes through it, are placed on the journals e3 f2 at the opposite ends of the rolling actuating member and stationary support. These several pairs of links hold the yparts assembled, 'yet permit movement thereof as required.

The roller e has one or both of its ends squared, as at c5, to receive a wrench or othe tool by which it may be turned.

With the parts in their lowermost positions, as shown in Fig. 6, the bilge-engaging.

block b rests upon the base-block a, and to raise the bilge-engaging block the toothed roller will be turned, and thereby caused to travel vup and along on the toothed sector f,

and the prop will be gradually raised by it and also will be moved into perpendicular position, as shown in Fig. 3. The prop having been raised and moved into perpendicular position, it is necessary to lock it in such position. Hence a dog g is provided, which is pivoted at g to the plate f and is adapted to engage any one of the teeth e of the rolling actuating member, and thus prevent any backward rotation or movement of said actuating member. Upon disengaging the dog g the prop will be permitted to resume its lowermost position, thereby causing the bilgeengaging block to recede from the bilge of the vessel.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block, and an actu- IOC ating member for said prop which engages and supports its lower end, and a support for said member, substantially as described.

2. ln a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block and a rotating actuating member for said prop which engages and supports its lower end, and a support for said member, substantially as described.

3. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block and the lower end of which is provided with several teeth,

65 formed bearings thereon from its opposite la toothed actuating member for said prop which engages and supports the lower toothed end thereof, and a support Jfor said member, substantially as described.

4. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block, a rolling actuating and supporting member for said prop, and a support on which said member rolls, substantially as described.

5. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block having teeth at its lower end, a toothed actuating roller for said prop which engages and supports the lower toothed end of the prop, and a support for said roller along which it travels while moving the block, substantially as described.

6. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block, an actuating member Jfor said prop which engages and supports its lower end, and an inclined support for said member along which it travels while moving the prop, substantially as described.

7. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the biIge-engaging block,

Y a rolling-actuating and supporting member for said prop and an inclined support on which said member rolls, substantially as described.

S. In a bilge-block, the combination of a base-block, a bilgeengaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block, and the lower end of which is formed with teeth, a toothed actuating member which engages and supports the lower toothed end of the prop, and an inclined support for said member along which it travels while moving the prop, substantially as described.

9. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block, an actuating and supporting member for said prop provided with teeth, and a toothed support for said member` along which it travels while moving the prop, substantially as described.

10. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block, an actuating and supporting member for said prop provided With teeth and an inclined toothed support for said member along which it travels while moving the prop, substantially as described.

11. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block having teeth at its lower end, a toothed actuating-roller for said prop which engages and supports the lower toothed end of the prop, and a toothed support for said roller along which it travels while moving the block, substantially as described.

12. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block, a supporting-roll for said prop, and actuating means for the prop, substantially as described.

13. In a bilge-bloclr, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block having a circularly-formed bearing at its upper end, a roller-support for said prop, a stationary support for said roller-support and actuating` nieans for the prop, substantially as described.

14. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block, a roller-support for said prop, a stationary support having an inclined bearing for said roller-support and actuating means for the prop, substantially as described.

15. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block,

a rollersupport for said prop, a stationary support having a circularly-formed bearing for said roller-suppoit, and actuating means for the prop, substantially as described.

16. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engagiiig block, a roller-support for said prop, a stationary support having a circularly-formed inclined bearing for said rollersupport, and actuating means for the prop, substantially as described.

17. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a. prop for the bilge-engaging block having a circularly-formed bearing at its lower end a roller-support for said prop, a stationary support having a circularly-fornied bearing for said roller-support, and actuating means for said prop, substantially as described.

18. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for the bilge-engaging block,

an actuating roller-support for said prop having means for engaging and moving said prop, substantially as described.

IOO

19. In a bilge-block, the combination of a v base-block, a bilge-eiigaging block pivoted thereto, a prop, the upper end of which engages said bilge-engaging block, an actuating member for the prop, circularly-formed bearings on said prop and on said actuating member, which engage each other, substantially as described.

20. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop which engages the bilge-engaging block having a toothed lower end, a

ISOV

22. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop forthe bilge-engaging block, a rolling actuating member for said prop having a circularly-formed bearing on Which the prop rests, and a support for said member having an inclined circularly-formed bearing, substantially as described.

23. In a bilge-blocl, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for said bilge-engaging block, a rolling actuating member engaging said z prop, and circularly-formed bearing portions on said prop and said actuating member, Which engage each other, and a support having a circularly-formed bearing Which receives upon it said actuating member, sub- 3` stantially as described.

24. In a bilge-block, the combination of a base-block, a bilge-engaging block pivoted thereto, a prop for said bilge-engaging block, an actuating and supporting member for 3 said prop having teeth, and a dog engaging any one-of the teeth of said member, for locking it, substantially as described.

In testimony whereof I have signed my name to this speciiication in the tWo subscribing Witnesses.

JAMES L. CRANDALL.

Witnesses B. J. NOYES, H. B. DAVIS.

presence of 4i 

